Clutch-operating mechanism.



No. 843.453. PATBNTED FEB. 5, 1907.

O.W.HAMANN. CLUTCH OPERATING MECHANISM.

APPLICATION FILED NOV.1,1906.-

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No. 843,453- PATENTED FEB. 5, 1907.

C. W. HAMANN.

CLUTCH OPERATING MECHANISM.

APPLICATION TILED NOV. 1, 1906.

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UNITED STATES l AIDENT OFFICE.

CLUTCH-OPERATING MECHANISM.

Specification of Letters Patent.

' Patented Feb. 5. 1907.

Application filed N vemb 1, 1906. Serial No. 341.640.

1'0 all whom/it nwtg concern:

Be it known that 1, CHARLES W.HA1\1ANN,,; a citizen of the United States, residing at Cleveland, in the county of Cuyahoga and 1 State of Ohio, have invented new and useful l Improvements in Clutch-Operating Mechanism, of which the following is a specification. I This invention is a mechanism for controlling clutches.

It consists particularly of a treadle-oper- 1 ated device provided with means whereby the I clutch will be disengagedafter 'one revolution 1 is made by the driven wheel. The devices shown will act to automatically release the clutch after each revolution. l

The invention further provides means, i however, whereby the automatic action can allowing the clutch to remain in engagement for continued rotation of the parts.

The invention also provides a look by I means of which the trip can be locked, so that the clutch cannot be operated. Thus operation of the machine may be positively prevented when not desired.

The invention is applicable to clutches of many kinds, but is illustrated in connection with a clutch of a particular kind, as will more fully appear hereinafter.

In the drawings, Figure 1 is a vertical section lengthwise of the nzain shaft, showing the clutch and the release devices. Fig. 2 is a side elevation, the driven or fly wheel being I removed from the shaft. Fig. 3 is a top view of the clutch-release devices. Fig. 4 is a see- Fig. 5 is a face view of a tripping-cam on the clutch-block.

Referring specifically to the drawings, 6 indicates the frame or standard of a macline carrying a driving-shaft 7, which may be 1 driven in any suitable manner. The driven wheel or member 8 is mounted upon the shaft and is loose thereon, being held by a cap S at the end of the shaft. The clutch acts between the shaft and the wheel to couple the same and includes a clutch-block 9, which is fast on the shaft. This block is circular and I is provided with a circular shoulder 10, hav- 1 ing a notch 11, which which are slidable in recesses in the hub of 1 Engagement of the each stroke, whether the will receiveeitlzer of l the longitudinally-1novable clutch-pins 12, in the lower end pins 12 in the notch 11 is normally prevented slide radially in guides in the hub of the wheel, and these latch-pieces engage a shoulder 15, near the front ends of the pins, and when so engaged prevent the advance of the pins. The latch-pieces are normally pressed into engagement by springs 16 behind the same. When a latch-piece is retracted, the pin 12 is permitted to advance into the notch 11 and so couple-the clutch. There are two clutch-pins shown, so that the operator can engage the clutch, if desired, on half-rotation without waiting for the complete rotation, and thus save time More or less of the clutch-pins may be used. This form of by latch-pieces 14, which clutch above described is old and is illustinted merely for the purpose of showing the application of my invention thereto, Without in any way intending to limit the invention to any particular form of clutch.

111 machines where one stroke at a time is desired it is desirable that automatic means be provided for releasing the clutch after treadle or other op erative mechanism for the clutch be released or not. In the present embodiment of the invention the clutch is engaged by means of a treadle 17, which is connected by'a rod 18 to a trip-rod 19, which has a shoulder 20 at the top arranged to engage over a shoulder 21 on either of the blocks 14. The rod 18 haste latch connection to the trip-rod 19, to be hereinafter described, but when the treadle I is operated the rod 19 is pulled down, which disengagcs the latch 14 and allows the pin 12 to spring into engagement in the notch 11, and so couple the clutch. To release the clutch independent of the treadle, it is essential that the connection between the rods 18 and 19 be broken, and also that the pin 12 he pushed back and again engaged by the latch 14. To this end the rods 1 8 and 19 are mounted in guides in a bracket 21, attached to the standard 6, and the upper end of the rod 18 is screwed into a hollow block 22, which carries a swinging latch 23, pivoted to the block at 24 and having a hook 25 at the top, which is adapted to engage in a notch 26 of the rod 19. The block 22 and rod 18 are normally lifted by a spring 27,

the wheel 8, and the pins tend to advance to 1 and the rod 191snormallylifted byaspring 28.

engagement in the notch by springs 13 behind the sa1re, and when one of the pins is so advanced the wheel and shaft are coupled and the former is caused to turn.

reason of spiral I When the latch 25 is engaged in the notch, the rods move together. but when disengaged the-rod 19 is free to spring up.

At 29 is indicated a lever, which is fulrelease of the 5 ICC ' 21, and the we! end of this lever has an arm projects this purpose I have provided a pin 37, which c'ated portion 39, through which the trip-rod may work. The pin is provided with a knurled head 40 to facilitate its manipulation, and there is a spring-catch 41 in arecess in the b acket, which will engage in one of the notches 42 in the pin, and so hold the same as set. When the pin is pushed in, the circular portion thereof is advanced into the notch 38, and accordingly the trip-rod 19 is locked in its upper position and cannot be operated to engage the clutch. -When the pin is pulled out, so that the trip-rod comes 0 posite the truncation 39, the operation of t e rod is not interfered with.

It will be seen that by the meclianlsm described means are provided for producing the intermittent or continuous operation of the driving devices, or, as shown, the trip mechanism can be locked, so that the clutch crumed upon an eccentric 30 in the bracket or piece 31, which projects in position to strike the tail of the latch 23 and by pressing the same inwardly releases the head 25 from the l notch 26. A coiled spring 32 hearing against the latch tends to normally hold the same engaged. The upper end of the trip-lever 29 above the bracket 21 in proximity to the periphery of the clutch-block 9, and said clutch-block has on said periphery a cam 33, (see Fig. 5,) which is properly positioned to wipe against the side of the lever 29 and swing said lever.

The head or upper end of the trip-rod 19 is provided with a cam 34, which, when said trip-rod is in released or raised position, will wipe against the end of the clutch-pin 12 and force said clutch-pin back and out of engagement with the notch 11. cannot be coupled. Obvious modifications In operation when the treadle is depressed l o the form or connections of the trip-rod 19 the trip-rod 19 is pulled down, releasing the will allow the same devices to be used in conlatch 14 and allowing the pin 12 to advance nection with clutches of other kinds. into the notch 11, as indicated in Fig. 1. This I claim being accomplished, the cam 33 then strikes 1. In a clutch-operating mechanism, in the upper end of the lever 29 and swings said combination, a supporting-bracket having lever on its pivot, causing the lower end to i guides, a trip-rod slidable in a guide and opadvance the part 31 against the tail of the eratively connected to the clutch, to engage latch 23, thereby throwing the head of said or disengage the same, a treadle, a connectlzitch out of engagement with the notch 26. ing-rod between the trip-rod and treadle, This releases the trip-rod, which is at once 1 having a block at the top slidable in a guide, raised by the spring 28, bringing its cam 34 in a latch pivoted to the block and arranged to position. so that on the completion of the sinengage the trip-rod, a spring tending to move gle revolution of the shaft the pin 12 rides up i the trip-rod to position to disengage the the cam 34 and out of engagement in the clutch, a trip-lever pivoted on the bracket notch, thereby releasing the clutch. When the treadle is released, the spring 27 causes i release the same and disconnect the said rods, the lift of the block 22, and the head of the 1 means to automatically trip the lever-after latch 25 is again engaged in the notch 26, each engagement of the clutch, and means to ready for the next operation. In order to reengage the latch with the trip-rod when the throw out the automatic releasing device treadle is released.

2. In a clutch-operating mechanism, 111

provided by the lever 29 and to allow the rotation to continue governed only by the treadle, I combination, a clutch having a circular block said lever 29 is fulcrumed upon the eccen- 9 the rim of which has a cam, and means to tric 30, which is pivoted, as indicated at 35, automatically release the clutch after each in the sides of the bracket 21 and provided engagement thereof, including a triprod, a with a handle 36, by means of which the eesliding block connected to a treadle and havcentric maybe turned to shift the lever 29, so ing a latch engageable with the rod, and a that it will be out of the path of the earn 33, l and consequently inoperative, and in this event the trip-rod 1.) remains unreleased as path of the cam and the other end of which is arranged to strike the latch, and means to throw the lever out of action when desired.

long as the treadle continues depressed, and the clutch will accordingly remain coupled. In testimony whereof I have signed my lt is occasionally desirable to lock the trip, so I name to this specification in the presence of that the clutch cannot be coupled, and for 1 two subscribing witnesses.

CHARLES W. HAMAN N.

W'itnesses:

JOHN A. BOMMI-IARDT, SHIRLEY J. BOMMHARDT is slidahle crosswise in a bore in the bracket 21,.adjacent the guide of the trip-rod 19, and i said rod is provided with a curved notch 38, l in which the pin work Tl le pin has a trun- E beside the latch and engageable therewith to" trip-lever one end of which projects into the IOO 

